A Comparison of Recombinant Hirudin with a Low-Molecular-Weight-Heparin to Prevent Thromboembolic Complications after Total Hip Replacement - Eriksson, BI; Wille-Jorgensen, P; Kalebo, P; Mouret, P; Rosencher, N; Bosch, P; Baur, M; Ekman, S; Bach, D; Lindbratt, S (N Engl J Med, 1997)